Clock Controller - Intel Cyclone 10 GX FPGA User Manual

5 Board Test System
UG-20105 | 2017.12.18

5.3.9 Clock Controller

The Clock Controller application sets the Si5332 programmable oscillators to any
frequency between 5 MHz and 312.5 MHz differential.
The Clock Controller application sets the Si570 programmable oscillators to any
frequency between 10 MHz and 725 MHz.
The Clock Control communicates with the Intel MAX 10 on the board through the JTAG
bus. The programmable oscillator are connected to the Intel MAX 10 device through a
2-wire serial bus.
Figure 20. Clock Controller - Si570
Serial Port Registers
Shows the current values from the Si570 registers for frequency configuration.
Target Frequency (MHz)
Allows you to specify the frequency of the clock. Legal values are between 10 MHz and
725 MHz with eight digits of precision to the right of the decimal point. For example,
421.31259873 is possible within 100 parts per million (ppm). The Target Frequency
control works in conjunction with the Set control.
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Intel Cyclone 10 GX FPGA Development Kit User Guide
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